: Are they a good upgrade for $1000? Decent power gain? All input is appreciated. Thanks guys.
a 60-1 hi-fi compressor. That should give you a decent spool up with max power in the 750rwhp range. If you build your bottom end and increase the displacement you could go with bigger turbos. I have Twin T04E/T3's 60-1 compressor with stage 5 exhaust that will be used on my Z. I have a lot of work done though. Email me and I will see if I can get you a pic of them. They are huge.